Update user docs based on recent installation experiences

1. naoki.yasuda is having trouble with permission errors. I think this is fixed by setting the user ID.
2. hassan noticed that the .bashrc that sources loadLSST.bash doesn't fire if you map over the homedir.
3. hassan request that the docker run command example of section 2.1 should mention the release version 5.0 and not latest.
4. price hassan request that the debug.py example in section 5.9 is corrected such that the missing return di is added to the end of the DebugInfo() function. See attachment.